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a liquid with a density of 55 lbscubic ft is traveling through a pipe at a velocity of 115 ftsec and its static
a steel section of the alaskan pipeline had a length of 65 m and a temperature of 18 degc when it was installed what is
a balloon contains 10 lbs of helium at a temperature of 70 f if the volume of the balloon is 300 ft3 what is the
in reaching her destination a backpacker walks with an average velocity of 105 ms due west this average velocity
julie drives 100 mi to grandmothers house on the way to grandmothers julie drives half the distance at 440mph and half
a diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm a very wide viewing screen
a severe thunderstorm dumped 24 in of rain in 30 min on a town of area 42 km2 what mass of water in kg fell on the town
a small glass bead has been charged to 600 a metal ball bearing 270 above the bead feels a 150times102 downward
a student throws a set of keys 44m up to friend in window the friend catches the keys 17s later what is the intial
a nitrogen molecule is initially in a large volume of calm air at stphow many collisions does the nitrogen molecule
what is the thermal kinetic energy in 1 kg of oxygen gas at 20degcwhat fraction of this energy is translationalwhat
a 500-g bullet is shot straight upward with a muzzle speed of 350 ms find the maximum height the bullet can reach by
an object slides down a 30o angle slope from rest at a height of 150 m the coefficient of kinetic friction between the
plane-polarized light passes through two polarizers whose axes are oriented at 350 degrees to each otherif the
a 20 kg 30-cm-diameter disk is spinning at 300 rpm how much friction force must the brake apply to the rim to stop it
a 300 hp car engine can deliver that maximum power at 6000 rpm what is the engines torque at that speed show your
a 250 hp water pump is pumping water from a well 120 m below ground how many liters of water can it lift to the ground
a 1000 kg roller coaster car starts from rest from a hilltop 800 m above the ground and moves without power down and
a 1600-kg car starts from rest to reach 600 milesh in 650 sa how much work is done by the engine during the
an elevator at the cn tower in toronto canada is able to lift 2000 kg including the load and the car to a height of 350
the force exerted to a robot arm from a motor is given as a function of position f 150 200 x2 nhow much work is done
a typical adult human lung contains about 310 million tiny cavities called alveoli estimate the average diameter of a
consider a car which weighs about 2000 kg and is parked at an elevation of 30 m above the bottom of a hill with a
a bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 323 ms three seconds
a disk of mass m is free to rotate about a fixed horizontal axis a string is wrapped around the rimof this disk and a